Andy, John, Prophet, or whatever your calling yourself today, have you forgotten the M-14 or M-21 Sniper system? As a RECRUIT I was knocking down three quarter- man size targets at 400 Meters 7 out of ten shot's. The M-21 Sniper system, 7.62MM,/.308 was killing small men at 800 Meters. The M-60 Machine gun, 7.62MM, can effectively engage man size targets at 1,000 Meters. The .308 is a LOT more effective than YOU think. The Car-15 11.5 inch barrel is a joke past 200 Meters. The 16" Barrel is effective to about 300 Meters. The M-16A2, 20" barrel can stretch that out to about 370 Meters, no more. You, Sir, have either got rocks in your head or don't know the first thing about small arms.